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Lavlinskaya MS, Sorokin AV, Mikhaylova AA, Kuznetsov EI, Baidamshina DR, Saranov IA, Grechkina MV, Holyavka MG, Zuev YF, Kayumov AR, Artyukhov VG. The Low-Waste Grafting Copolymerization Modification of Chitosan Is a Promising Approach to Obtaining Materials for Food Applications. Polymers (Basel) 2024; 16:1596. [PMID: 38891542 PMCID: PMC11175091 DOI: 10.3390/polym16111596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 05/28/2024] [Accepted: 06/03/2024] [Indexed: 06/21/2024] Open
Abstract
Chitosan takes second place of the most abundant polysaccharides naturally produced by living organisms. Due to its abundance and unique properties, such as its polycationic nature, ability to form strong elastic porous films, and antibacterial potential, it is widely used in the food industry and biomedicine. However, its low solubility in both water and organic solvents makes its application difficult. We have developed an environmentally friendly method for producing water-soluble graft copolymers of chitosan and poly (N-vinylpyrrolidone) with high grafting efficiency and a low yield of by-products. By using AFM, SEM, TGA, DSC, and XRD, it has been demonstrated that the products obtained have changed properties compared to the initial chitosan. They possess a smoother surface and lower thermal stability but are sufficient for practical use. The resulting copolymers have a higher viscosity than the original chitosan, making them a promising thickener and stabilizer for food gels. Moreover, the copolymers exhibit an antibacterial effect, suggesting their potential use as a component in smart food packaging.
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Affiliation(s)
- Maria S. Lavlinskaya
- Biophysics and Biotechnology Department, Voronezh State University, 1 Universitetskaya Square, 394018 Voronezh, Russia; (A.V.S.); (M.G.H.); (V.G.A.)
| | - Andrey V. Sorokin
- Biophysics and Biotechnology Department, Voronezh State University, 1 Universitetskaya Square, 394018 Voronezh, Russia; (A.V.S.); (M.G.H.); (V.G.A.)
- Polymer Science and Colloid Chemistry Department, Voronezh State University, 1 Universitetskaya Square, 394018 Voronezh, Russia; (A.A.M.); (E.I.K.)
| | - Anastasia A. Mikhaylova
- Polymer Science and Colloid Chemistry Department, Voronezh State University, 1 Universitetskaya Square, 394018 Voronezh, Russia; (A.A.M.); (E.I.K.)
| | - Egor I. Kuznetsov
- Polymer Science and Colloid Chemistry Department, Voronezh State University, 1 Universitetskaya Square, 394018 Voronezh, Russia; (A.A.M.); (E.I.K.)
| | - Diana R. Baidamshina
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 18 Kremlevskaya Street, 420008 Kazan, Russia; (D.R.B.); (A.R.K.)
| | - Igor A. Saranov
- Research Core Center “Testing Center”, Voronezh State University of Engineering Technologies, 19 Revolutsii Avenue, 394036 Voronezh, Russia;
| | - Margaryta V. Grechkina
- Research Core Center, Voronezh State University, 1 Universitetskaya Square, 394018 Voronezh, Russia;
| | - Marina G. Holyavka
- Biophysics and Biotechnology Department, Voronezh State University, 1 Universitetskaya Square, 394018 Voronezh, Russia; (A.V.S.); (M.G.H.); (V.G.A.)
- Physics Department, Sevastopol State University, 33 Studencheskaya Street, 299053 Sevastopol, Russia
| | - Yuriy F. Zuev
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of the RAS, 2/31 Lobachevsky Street, 420111 Kazan, Russia;
| | - Ayrat R. Kayumov
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 18 Kremlevskaya Street, 420008 Kazan, Russia; (D.R.B.); (A.R.K.)
| | - Valeriy G. Artyukhov
- Biophysics and Biotechnology Department, Voronezh State University, 1 Universitetskaya Square, 394018 Voronezh, Russia; (A.V.S.); (M.G.H.); (V.G.A.)
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Hussain A, Maitra J, Saifi A, Ahmed S, Ahmed J, Shrestha NK, Qureshi F, Kamyab H, Chelliapan S, Yusuf M. A sustainable approach for fluoride treatment using coconut fiber cellulose as an adsorbent. ENVIRONMENTAL RESEARCH 2024; 244:117952. [PMID: 38113992 DOI: 10.1016/j.envres.2023.117952] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 12/04/2023] [Accepted: 12/13/2023] [Indexed: 12/21/2023]
Abstract
In developing countries like India, an economically viable and ecologically approachable strategy is required to safeguard the drinking water. Excessive fluoride intake through drinking water can lead to dental fluorosis, skeletal fluorosis, or both. The present study has been under with an objective to investigate the feasibility of using cellulose derived from coconut fiber as an adsorbent under varying pH conditions for fluoride elimination from water. The assessment of equilibrium concentration of metal ions using adsorption isotherms is an integral part of the study. This present finding indicates the considerable effect of variation of adsorbent dosages on the fluoride removal efficiency under constant temperature conditions of 25 ± 2 °C with a contact period of 24 h. It is pertinent to mention that maximum adsorption of 88% has been observed with a pH value of 6 with 6 h time duration with fluoride dosage of 50 mg/L. The equilibrium concentration dwindled to 0.4 mg/L at fluoride concentration of 20 mg/L. The Langmuir model designates the adsorption capacity value of 2.15 mg/L with initial fluoride concentration of 0.21 mg/g with R2 value of 0.660. Similarly, the adsorption capacity using Freundlich isotherms is found to be 0.58 L/g and 0.59 L/g with fluoride concentration of 1.84 mg/L and 2.15 mg/L respectively. The results from the present study confirm that coconut fiber possesses appropriate sorption capabilities of fluoride ion but is a pH dependent phenomenon. The outcomes of the study indicate the possible use of cellulose extracted from waste coconut fiber as a low-cost fluoride adsorbent. The present study can be well implemented on real scale systems as it will be beneficial economically as well as environmentally.
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Affiliation(s)
- Athar Hussain
- Civil Engineering Department, Netaji Subhas University of Technology West Campus, Jaffarpur, New Delhi, 110073, India
| | - Jaya Maitra
- Department of Chemistry, School of Applied Sciences, Gautam Buddha University, Greater Noida, UP, India
| | - Aslam Saifi
- Civil Engineering Department, Environmental Engineering Section, School of Engineering, Gautam Buddha University, Greater Noida, UP, 201312, India
| | - Salman Ahmed
- Interdisciplinary Department of Remote Sensing and GIS Applications, Aligarh Muslim University, Aligarh, 202002, India.
| | - Jahangeer Ahmed
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Nabeen K Shrestha
- Division of Physics and Semiconductor Science, Dongguk University, Seoul, 04620, South Korea
| | - Fazil Qureshi
- Chemical and Petroleum Engineering Department, UAE University, P.O. Box 15551, Al Ain, United Arab Emirates
| | - Hesam Kamyab
- Faculty of Architecture and Urbanism, UTE University, Calle Rumipamba S/N and Bourgeois, Quito, Ecuador; Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, 600 077, India; Process Systems Engineering Centre (PROSPECT), Faculty of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
| | - Shreeshivadasan Chelliapan
- Engineering Department, Razak Faculty of Technology & Informatics, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100 Kuala Lumpur, Malaysia
| | - Mohammad Yusuf
- Clean Energy Technologies Research Institute (CETRI), Process Systems Engineering, Faculty of Engineering and Applied Science, University of Regina, Regina, SK, 3737 Wascana Parkway, S4S 0A2, Canada; Centre of Research Impact and Outcome, Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, India.
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Almakimi A, Ben Ali A, Hussein IA, Bai B. Evaluation of Novel Preformed Particle Gel System for Conformance Control in Mature Oil Reservoirs. Gels 2024; 10:70. [PMID: 38247792 PMCID: PMC10815741 DOI: 10.3390/gels10010070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 01/14/2024] [Accepted: 01/15/2024] [Indexed: 01/23/2024] Open
Abstract
To address challenges associated with excessive water production in mature oil reservoirs, this study introduces a carboxymethyl cellulose (CMC)-based material as a novel preformed particle gel (PPG) designed to plug excessive water pathways and redistribute the subsequent injected water toward unswept zones. Through microwave-assisted grafting copolymerization of CMC with acrylamide (AM), we successfully generated multi-sized dry particles within the range of 250-800 µm. Comprehensive analyses, including Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), have confirmed the chemical composition and morphology of the resulting carboxymethyl cellulose-grafted crosslinked polyacrylamide (CMC/PAMBA). Swelling kinetics and rheology tests were conducted to confirm the ability of this novel PPG system to perform at different reservoir conditions. The results of core flooding experiments showed that the CMC/PAMBA PPG is capable of plugging open fractures with a water breakthrough pressure gradient of up to 144 psi/ft. This preformed particle gel (PPG) system was designed specifically for application in Middle East reservoirs, which are distinguished by high salinity and elevated temperature levels. This PPG system is able to swell up to 10 times its original size in seawater and maintain a strength of about 1300 Pa at a temperature of 80 °C. Further optimization is conceivable to enhance injection efficiency and achieve superior plugging outcomes.
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Affiliation(s)
- Abdulaziz Almakimi
- Petroleum Engineering Department, Missouri University of Science and Technology, Rolla, MO 65409, USA;
| | - Ahmed Ben Ali
- Gas Processing Center, Qatar University, Doha P.O. Box 2713, Qatar; (A.B.A.); (I.A.H.)
| | | | - Baojun Bai
- Petroleum Engineering Department, Missouri University of Science and Technology, Rolla, MO 65409, USA;
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Jalab R, Saad M, Benali A, Hussein IA, Khaled M. Biodegradable polysaccharide grafted polyacrylamide inhibitor for corrosion in CO 2- saturated saline solution. Heliyon 2023; 9:e20304. [PMID: 37810837 PMCID: PMC10556602 DOI: 10.1016/j.heliyon.2023.e20304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/13/2023] [Accepted: 09/18/2023] [Indexed: 10/10/2023] Open
Abstract
A biodegradable polysaccharide-based inhibitor is grafted with polyacrylamide (PAM) for oilfields' sweet corrosion. The green properties of agar and PAM were incorporated to synthesize an agar-grafted-PAM (AGGPAM) inhibitor. Electrochemical tests of Tafel and AC impedance, were used to determine the corrosion rate of carbon steel (C-steel) and protection efficiency in CO2-saturated 3.5 wt% NaCl solution. The surface morphology was characterized using FESEM coupled with EDX. Results demonstrated the promising performance of AGGPAM in improving steel resistivity, achieving 85% efficiency at 500 mg L-1 and reducing the corrosion rate from 33 to 4.9 mils per year at 25 °C. The electrochemical tests classified AGGPAM as a mixed-type inhibitor, yet with a larger potential to inhibit the cathodic hydrogen evolution. Kinetics study at a temperature of 50 °C revealed a deteriorated AGGPAM inhibition attributed to electrolyte diffusion through the weakly adsorbed AGGPAM film. Nevertheless, the AGGPAM-inhibited solution exhibited a corrosion rate of 26.7 mils per year at 50 °C, which is still lower than that of blank at 25 °C. The steel resistance was diminished from 1436 to 355 Ω cm2 at 50 °C. Implementing AGGPAM coating reduced the steel corrosion rate to 9.6 mils per year, achieving 71% efficiency. AGGPAM inhibitor toxicity was evaluated using ADMETlab, which predicted negligible hazardous impacts. Lastly, potentiostatic testing of steel with AGGPAM at an applied potential of 50 mV illustrated surface protection and decreased current over a prolonged time. Herein, the experimental investigation revealed the promising capabilities of AGGPAM as an efficient corrosion inhibitor in oilfields.
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Affiliation(s)
- Rem Jalab
- Gas Processing Center, College of Engineering, Qatar University, PO Box 2713, Doha, Qatar
| | - Mohammed Saad
- Gas Processing Center, College of Engineering, Qatar University, PO Box 2713, Doha, Qatar
- Chemical Engineering Department, College of Engineering, Qatar University, PO Box 2713, Doha, Qatar
| | - Ahmed Benali
- Gas Processing Center, College of Engineering, Qatar University, PO Box 2713, Doha, Qatar
| | - Ibnelwaleed A. Hussein
- Gas Processing Center, College of Engineering, Qatar University, PO Box 2713, Doha, Qatar
- Chemical Engineering Department, College of Engineering, Qatar University, PO Box 2713, Doha, Qatar
| | - Mazen Khaled
- Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar University, PO Box 2713, Doha, Qatar
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Prasad C, Madkhali N, Jeong SG, Malkappa K, Choi HY, Govinda V. Recent advances in the hybridization of cellulose and semiconductors: Design, fabrication and emerging multidimensional applications: A review. Int J Biol Macromol 2023; 233:123551. [PMID: 36740107 DOI: 10.1016/j.ijbiomac.2023.123551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 01/17/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023]
Abstract
Cellulose is a plentiful, biodegradable, renewable, and natural polymer in the world that can be widely utilized in the production of polymer nanocomposites. Cellulose is developed in nanomaterials owing to its remarkable inherent features of low density, non-toxicity, and affordability, as well as the amazing sample characteristics of strength and thermal stability. Recently, there has been a lot of interest in organic-inorganic composites because of their adaptable qualities. Cellulose and semiconductors have exciting properties, and new combinations of both materials may result in efficient functional hybrid composites with distinct properties. Lately, a huge study was reported on cellulose and semiconductor-based nanocomposites. In this review, we summarize the present research development in the preparation methods, structure, features, and possible applications of multifunctional cellulose and semiconductor-based nanocomposites. The cellulose/semiconductor based nanocomposites have massive potential applications in the areas of photodegradation of organic dyes, hydrogen production, metal removal, biomedical, and sensor applications. It is also assumed that this article will promote additional investigation and will establish innovative capabilities to enhance novel cellulose and semiconductor based nanocomposites with new and exciting applications.
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Affiliation(s)
- Cheera Prasad
- Department of Fashion and Textiles, Dong-A University, Busan 49315, Republic of Korea
| | - Nawal Madkhali
- Department of Physics, College of Sciences, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Seong-Geun Jeong
- Bio-MAX Institute, Seoul National University, Seoul, Republic of Korea
| | - Kuruma Malkappa
- Department of Fashion and Textiles, Dong-A University, Busan 49315, Republic of Korea
| | - Hyeong Yeol Choi
- Department of Fashion and Textiles, Dong-A University, Busan 49315, Republic of Korea.
| | - V Govinda
- Department of Chemistry, Gayatri Vidya Parishad College for Degree and PG Courses (A), Rushikonda campus, Visakhapatnam 530045, India
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Designing and application of reactive extrusion with twice initiations for graft copolymerization of acrylamide on starch. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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7
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Biopolymer in Wastewater Treatment. Biopolymers 2022. [DOI: 10.1007/978-3-030-98392-5_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Kinetic investigation of oxidation of alkanolamine by Cerium(IV) in acidic medium: catalytic effect of Mn(II). J CHEM SCI 2021. [DOI: 10.1007/s12039-021-01921-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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9
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Promising grafting strategies on cellulosic backbone through radical polymerization processes – A review. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110448] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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10
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Abstract
A critical review on the synthesis, characterization, and modeling of polymer grafting is presented. Although the motivation stemmed from grafting synthetic polymers onto lignocellulosic biopolymers, a comprehensive overview is also provided on the chemical grafting, characterization, and processing of grafted materials of different types, including synthetic backbones. Although polymer grafting has been studied for many decades—and so has the modeling of polymer branching and crosslinking for that matter, thereby reaching a good level of understanding in order to describe existing branching/crosslinking systems—polymer grafting has remained behind in modeling efforts. Areas of opportunity for further study are suggested within this review.
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Sharma P, Gupta S, Soni PL, Kumar V. Ce(IV)-ion initiated grafting of 1,3 galactomannan biopolymer with acrylonitrile. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2020. [DOI: 10.1080/10601325.2020.1735254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Pradeep Sharma
- Chemistry and Bioprospecting Division, Forest Research Institute (ICFRE), Dehra Dun, India
| | - Sarika Gupta
- Chemistry and Bioprospecting Division, Forest Research Institute (ICFRE), Dehra Dun, India
| | - P. L. Soni
- Chemistry and Bioprospecting Division, Forest Research Institute (ICFRE), Dehra Dun, India
| | - Vineet Kumar
- Chemistry and Bioprospecting Division, Forest Research Institute (ICFRE), Dehra Dun, India
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12
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Preparation and flocculation properties of biodegradable konjac glucomannan-grafted poly(trimethyl allyl ammonium chloride). Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-02836-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
The substitution of petroleum-based synthetic polymers in latex formulations with sustainable and/or bio-based sources has increasingly been a focus of both academic and industrial research. Emulsion polymerization already provides a more sustainable way to produce polymers for coatings and adhesives, because it is a water-based process. It can be made even more attractive as a green alternative with the addition of starch, a renewable material that has proven to be extremely useful as a filler, stabilizer, property modifier and macromer. This work provides a critical review of attempts to modify and incorporate various types of starch in emulsion polymerizations. This review focusses on the method of initiation, grafting mechanisms, starch feeding strategies and the characterization methods. It provides a needed guide for those looking to modify starch in an emulsion polymerization to achieve a target grafting performance or to incorporate starch in latex formulations for the replacement of synthetic polymers.
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Abbasian M, Mahmoodzadeh F, khalili A, Salehi R. Chemotherapy of Breast Cancer Cells Using Novel pH-Responsive Cellulose-Based Nanocomposites. Adv Pharm Bull 2019; 9:122-131. [PMID: 31011566 PMCID: PMC6468221 DOI: 10.15171/apb.2019.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Revised: 12/28/2018] [Accepted: 02/04/2019] [Indexed: 11/09/2022] Open
Abstract
Purpose: The objective of the current study was to compare the anticancer efficacy of doxorubicin-loaded cellulose based magnetic (Fe3O4), zinc oxide (ZnO) nanoparticles on and free doxorubicin (DOX) on MCF-7 breast cancer cells. Methods: Novel pH-sensitive cellulose-graft poly acrylic acid based Fe3O4 (Cellulose-g-PAAg- PAcMNPs) and ZnO (Cellulose-g-PAA-g-PAcZnO) nanocomposites were synthesized via polymerization of acrylic acid and modified 3-(trimethoxysilyl) propyl methacrylate onto the cellulosic backbone via reversible addition-fragmentation chain transfer (RAFT) method. Results : Cellulose-g-PAA-g-PAcMNPs and Cellulose-g-PAA-g-PAcZnO nanocarriers with mean diameter of 15 and 38 nm were prepared successfully. DOX was loaded effectively to the ZnO and Fe3O4 nanocarriers via complexing and electrostatic force with great encapsulation efficiency of 99.07% and 98.92%, respectively. DOX-loaded nanocarriers showed obvious pHdependent tumor specific drug release pattern. MTT assay results indicated that IC50 of the DOX loaded Cellulose-g-PAA-g-PAcZnO, DOX loaded Cellulose-g-PAA-g-PAcMNPs and free DOX after 48 hours treatment with MCF7 cell lines were about 24.03, 49.27 and 99.76 μg mL-1, respectively. Therefore both DOX nanoformulations significantly increase antitumor ability compared to free DOX (P < 0.05). The results of MTT assay and DAPI staining revealed that DOX-loaded Cellulose-g-PAA-g-PAcZnO NPs show higher chemotherapy efficiency in MCF7 breast cancer cell line compare to the DOX-loaded Cellulose-g-PAA-g-PAcMNPs due to high interaction of ZnO with DOX. Conclusion: The formation of the complexes between the DOX and ZnO nanoparticles at the chelating sites of the quinone and the phenolic oxygen molecules of DOX, lead to more sustained drug release and enhanced chemotherapy effectiveness by increasing the intracellular concentration of DOX.
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Affiliation(s)
- Mojtaba Abbasian
- Department of Chemistry, Payame Noor University, P.O. BOX: 19395-3697, Tehran, Iran
| | | | - Azra khalili
- Department of Chemistry, Payame Noor University, P.O. BOX: 19395-3697, Tehran, Iran
| | - Roya Salehi
- Drug Applied Research Center and Department of Medical Nanotechnology, Faculty of Advanced Medical Science, Tabriz University of Medical Science, Tabriz, Iran
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Kuznetsov VA, Sorokin AV, Lavlinskaya MS, Sinelnikov AA, Bykovskiy DV. Graft copolymers of carboxymethyl cellulose with N-vinylimidazole: synthesis and application for drug delivery. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-018-2635-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Pan Y, Li B, Liu Z, Yang Z, Yang X, Shi K, Li W, Peng C, Wang W, Ji X. Superfast and Reversible Thermoresponse of Poly( N-isopropylacrylamide) Hydrogels Grafted on Macroporous Poly(vinyl alcohol) Formaldehyde Sponges. ACS APPLIED MATERIALS & INTERFACES 2018; 10:32747-32759. [PMID: 30157634 DOI: 10.1021/acsami.8b12395] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Poly( N-isopropylacrylamide) (PNIPAAm), a typical thermoresponsive polymer, exhibits potential application in smart materials. However, bulk PNIPAAm hydrogel monoliths undergo slow volume phase transition at least tens of minutes to hours as determined by the shape and size of polymers due to the formation of the skin layer. In this regard, novel macroporous sponges with rapid thermoresponse are prepared via grafting polymerization of N-isopropylacrylamide (NIPAAm) onto the macroporous poly(vinyl alcohol) formaldehyde (PVF) network as confirmed by attenuated total reflection-infrared (ATR IR) and 1H NMR spectra. As prepared PVF- g-PNIPAAm sponges display interconnected open-cell structures, and their average pore sizes and porosities are ∼90 μm and >85%, respectively. The equilibrium swelling ratio of PVF- g-PNIPAAm sponges varies from 11 to 50 with temperature. The volume phase transition temperature is at 30-34 °C, as detected in the DSC curves of swollen samples. These features indicate that the existence of the original PVF network exerts almost no influence on the PNIPAAm temperature responsibility. As prepared samples can reach the swelling equilibrium in less than 80 s, and their rapid swelling kinetics can be fitted using the pseudo-first-order rate kinetic equation. Notably, the samples also display rapid deswelling rate in less than 40 s at relative high temperature (48 °C), thereby indicating a superfast responsive behavior to temperature change. The PVF- g-PNIPAAm sponges exhibit rapid and reversible thermoresponse in repeatable swelling-deswelling cycles, which can satisfy the need of special smart materials. In particular, combined with iodine solution (i.e., PVF- g-PNIPAAm/I2), these sponges can serve as a novel temperature indicator and exhibit excellent antibacterial performances.
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Affiliation(s)
- Yanxiong Pan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , P. R. China
| | - Bingrui Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , P. R. China
| | - Zhi Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , P. R. China
| | - Zhongyu Yang
- Department of Chemistry and Biochemistry , North Dakota State University , Fargo , North Dakota 58108 , United States
| | - Xu Yang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , P. R. China
| | - Kai Shi
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , P. R. China
| | - Wei Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , P. R. China
| | - Chao Peng
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , P. R. China
| | - Weicai Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , P. R. China
| | - Xiangling Ji
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , P. R. China
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Nanogels of methylcellulose hydrophobized with N-tert-butylacrylamide for ocular drug delivery. Drug Deliv Transl Res 2017; 6:648-659. [PMID: 27807769 DOI: 10.1007/s13346-016-0337-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
While eye drops account for the majority of ophthalmic formulation for drug delivery, their efficiency is limited by rapid pre-corneal loss. In this study, we investigate nanogel suspensions in order to improve the topical ocular therapy by reducing dosage and frequency of administration. We synthesized self-assembling nanogels of 140 nm by grafting side chains of poly(N-tert-butylacrylamide) (PNtBAm) on methylcellulose via cerium ammonium nitrate. Successful grafting of PNtBAm onto methylcellulose (MC) was confirmed by both NMR and ATR. Synthesized molecules (MC-g-PNtBAm) self-assembled in water driven by hydrophobic interaction of the grafted side chains creating colloid solutions. Materials were synthesized by changing feed ratios of acid, initiator and monomer in order to control the degree of hydrophobic modification. The nanogels were tested for different degrees of grafting. Viability studies performed with HCE cells testified to the biocompatibility of poly(N-tert-butylacrylamide) grafted methylcellulose nanogels. Dexamethasone was entrapped with an efficiency superior to 95 % and its release presented minimal burst phase. Diffusion of drug from the nanogels was found to be delayed by increasing the degree of grafting. The release profile of the entrapped compound from the MC-g-PNtBAm nanogels can thus be tuned by simply adjusting the degree of hydrophobic modification. MC-g-PNtBAm nanogels present promising properties for ocular drug delivery.
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18
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Oraby H, Senna MM, Elsayed M, Gobara M. Fabrication of reverse-osmosis membranes for the desalination of underground water via the γ-radiation grafting of acrylic acid onto polyethylene films. J Appl Polym Sci 2017. [DOI: 10.1002/app.45410] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Hussein Oraby
- Department of Chemical Engineering; Military Technical Collage; Cairo Egypt
| | - Magdy M. Senna
- Radiation Chemistry Department; National Center for Radiation Research and Technology, Atomic Energy Authority; Cairo Egypt
| | - Mohamed Elsayed
- Department of Chemical Engineering; Military Technical Collage; Cairo Egypt
| | - Mohamed Gobara
- Department of Chemical Engineering; Military Technical Collage; Cairo Egypt
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19
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Zhu L, Qiu J, Sakai E, Ito K. Rapid Recovery Double Cross-Linking Hydrogel with Stable Mechanical Properties and High Resilience Triggered by Visible Light. ACS APPLIED MATERIALS & INTERFACES 2017; 9:13593-13601. [PMID: 28322540 DOI: 10.1021/acsami.7b01003] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The designed tough hydrogels, depending on energy dissipation mechanism, possess excellent biocompatibility, stimuli-responsiveness, and outstanding mechanical properties. However, the application of hydrogels is greatly limited in actuators and sensors for the lack of instantaneous recovery and resilience. In this work, we synthesized a double cross-linking poly(acrylic acid) hydrogel via a simple, one-pot, visible-light-trigger polymerization, with carboxymethyl cellulose as initiator and the first cross-linker, N,N'-methylene bis(acrylamide) (MBA) as the second cross-linker. The tensile strength and elastic modulus are in the range of 724-352 kPa and 115-307 kPa, respectively, depending on the MBA content. The swelling ratio of hydrogels dramatically decreased with increasing the MBA content. DMA results indicate that the internal friction between molecules within the hydrogel decreases with the increase of MBA content. Cyclic tensile tests show that after the structure stabilizes, the resilience, maximum stress, and residual strain of Gel-2 maintains over 93% (95% for successive cyclic tensile test), 115 kPa and less than 3%, respectively, at a strain of 125%. The values of resilience and residual strain are almost constant in both successive and intermittent cyclic tensile tests. Moreover, the swollen hydrogel has higher resilience and lower residual strain than the same hydrogel in the as-prepared state.
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Affiliation(s)
- Longxiang Zhu
- Department of Machine Intelligence and Systems Engineering Faculty of Systems Engineering, Akita Prefectural University , Akita 015-0055, Japan
| | - Jianhui Qiu
- Department of Machine Intelligence and Systems Engineering Faculty of Systems Engineering, Akita Prefectural University , Akita 015-0055, Japan
| | - Eiichi Sakai
- Department of Machine Intelligence and Systems Engineering Faculty of Systems Engineering, Akita Prefectural University , Akita 015-0055, Japan
| | - Kazushi Ito
- Department of Machine Intelligence and Systems Engineering Faculty of Systems Engineering, Akita Prefectural University , Akita 015-0055, Japan
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20
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Kumar R, Sharma RK, Singh AP. Cellulose based grafted biosorbents - Journey from lignocellulose biomass to toxic metal ions sorption applications - A review. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.02.050] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Li Y, Chen MD, Wan X, Zhang L, Wang X, Xiao H. Solvent-free synthesis of the cellulose-based hybrid beads for adsorption of lead ions in aqueous solutions. RSC Adv 2017. [DOI: 10.1039/c7ra09592a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Modified cellulose hybrid beads were synthesised as absorbents for Pb2+removal and CaCO3was utilized to increase pore structure.
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Affiliation(s)
- Y. Li
- Department of Chemical Engineering
- University of New Brunswick
- Fredericton
- Canada
- Jiangsu Key Lab of Atmospheric Environment Monitoring and Pollution Control
| | - M. D. Chen
- Jiangsu Key Lab of Atmospheric Environment Monitoring and Pollution Control
- School of Environmental Sci & Tech
- Nanjing University of Information Science and Technology
- Nanjing
- China 210044
| | - X. Wan
- Department of Environmental Science and Engineering
- North China Electric Power University
- Baoding 071003
- China
| | - L. Zhang
- Jiangsu Key Lab of Atmospheric Environment Monitoring and Pollution Control
- School of Environmental Sci & Tech
- Nanjing University of Information Science and Technology
- Nanjing
- China 210044
| | - X. Wang
- Department of Chemical Engineering
- University of New Brunswick
- Fredericton
- Canada
| | - H. Xiao
- Department of Chemical Engineering
- University of New Brunswick
- Fredericton
- Canada
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22
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Shah SB, Patel CP, Trivedi HC. Ceric-induced Grafting of Acrylonitrile onto Sodium Alginate. HIGH PERFORM POLYM 2016. [DOI: 10.1088/0954-0083/4/3/003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Acrylonitrile (AN) was grafted onto sodium alginate (SA) using ceric salt as initiator. The optimized reaction conditions affording the maximum percentage of grafting are determined by varying the concentrations of nitric acid, ceric ammonium nitrate, SA and AN, and also temperature and time. The results are discussed and the efficiency of ceric salt is compared with that of Fenton's reagent.
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Affiliation(s)
| | | | - H. C. Trivedi
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar 388120, Gujarat, India
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23
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Liu Z, Pan Y, Shi K, Wang W, Peng C, Li W, Sha D, Wang Z, Ji X. Preparation of hydrophilic luffa sponges and their water absorption performance. Carbohydr Polym 2016; 147:178-187. [DOI: 10.1016/j.carbpol.2016.04.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 03/10/2016] [Accepted: 04/01/2016] [Indexed: 10/22/2022]
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24
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Kedzior SA, Graham L, Moorlag C, Dooley BM, Cranston ED. Poly(methyl methacrylate)-grafted cellulose nanocrystals: One-step synthesis, nanocomposite preparation, and characterization. CAN J CHEM ENG 2016. [DOI: 10.1002/cjce.22456] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Stephanie A. Kedzior
- Department of Chemical Engineering; McMaster University; 1280 Main St. West Hamilton ON, L8S 4L7 Canada
| | - Lexa Graham
- Department of Chemical Engineering; McMaster University; 1280 Main St. West Hamilton ON, L8S 4L7 Canada
| | - Carolyn Moorlag
- Xerox Research Centre of Canada; 2660 Speakman Drive Mississauga ON, L5K 2L1 Canada
| | - Brynn M. Dooley
- Xerox Research Centre of Canada; 2660 Speakman Drive Mississauga ON, L5K 2L1 Canada
| | - Emily D. Cranston
- Department of Chemical Engineering; McMaster University; 1280 Main St. West Hamilton ON, L8S 4L7 Canada
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25
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Preparation and characteristics of nanosilver composite based on chitosan-graft-acrylic acid copolymer. JOURNAL OF POLYMER RESEARCH 2015. [DOI: 10.1007/s10965-015-0781-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Rosli NA, Ahmad I, Abdullah I, Anuar FH, Mohamed F. Hydrophobic modification of cellulose isolated from Agave angustifolia fibre by graft copolymerisation using methyl methacrylate. Carbohydr Polym 2015; 125:69-75. [DOI: 10.1016/j.carbpol.2015.03.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 03/01/2015] [Accepted: 03/02/2015] [Indexed: 11/15/2022]
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27
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Szymański JK, Temprano-Coleto F, Pérez-Mercader J. Unusual kinetics of poly(ethylene glycol) oxidation with cerium(iv) ions in sulfuric acid medium and implications for copolymer synthesis. Phys Chem Chem Phys 2015; 17:6713-7. [DOI: 10.1039/c4cp05693k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Complex aqueous phase equilibria influence the kinetics of polyalcohol–cerium(iv) reaction in sulfuric acid medium. Zeroth-order kinetics, not previously reported in such systems, results for certain sulfate ion concentrations.
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Affiliation(s)
- Jan K. Szymański
- Department of Earth and Planetary Sciences
- Harvard University
- Cambridge
- USA
| | | | - Juan Pérez-Mercader
- Department of Earth and Planetary Sciences
- Harvard University
- Cambridge
- USA
- Santa Fe Institute
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28
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Usha Rani G, Konreddy AK, Mishra S, Sen G. Synthesis and applications of polyacrylamide grafted agar as a matrix for controlled drug release of 5-ASA. Int J Biol Macromol 2014; 65:375-82. [DOI: 10.1016/j.ijbiomac.2014.01.034] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Revised: 01/05/2014] [Accepted: 01/17/2014] [Indexed: 10/25/2022]
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29
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Donia AM, Yousif AM, Atia AA, Abd El-Latif HM. Preparation and Characterization of Modified Cellulose Adsorbents with High Surface Area and High Adsorption Affinity for Hg(II). J DISPER SCI TECHNOL 2014. [DOI: 10.1080/01932691.2013.791626] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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30
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Mellati A, Dai S, Bi J, Jin B, Zhang H. A biodegradable thermosensitive hydrogel with tuneable properties for mimicking three-dimensional microenvironments of stem cells. RSC Adv 2014. [DOI: 10.1039/c4ra12215a] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Chitosan-g-poly(N-isopropylacrylamide) was synthesized as a stem cell mimicking microenvironment. Solubility and gel mechanical strength were optimised through manipulating the grafting parameters.
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Affiliation(s)
- Amir Mellati
- School of Chemical Engineering
- The University of Adelaide
- Adelaide SA5005, Australia
| | - Sheng Dai
- School of Chemical Engineering
- The University of Adelaide
- Adelaide SA5005, Australia
| | - Jingxiu Bi
- School of Chemical Engineering
- The University of Adelaide
- Adelaide SA5005, Australia
| | - Bo Jin
- School of Chemical Engineering
- The University of Adelaide
- Adelaide SA5005, Australia
| | - Hu Zhang
- School of Chemical Engineering
- The University of Adelaide
- Adelaide SA5005, Australia
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31
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Teli M, Sheikh J. Modified bamboo rayon–copper nanoparticle composites as antibacterial textiles. Int J Biol Macromol 2013; 61:302-7. [DOI: 10.1016/j.ijbiomac.2013.07.015] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 07/20/2013] [Accepted: 07/27/2013] [Indexed: 02/07/2023]
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32
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Sen G, Rani GU, Mishra S. Microwave assisted synthesis of poly(2-hydroxyethylmethacrylate) grafted agar (Ag-g-P(HEMA)) and its application as a flocculant for wastewater treatment. Front Chem Sci Eng 2013. [DOI: 10.1007/s11705-013-1344-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Kan KHM, Li J, Wijesekera K, Cranston ED. Polymer-Grafted Cellulose Nanocrystals as pH-Responsive Reversible Flocculants. Biomacromolecules 2013; 14:3130-9. [DOI: 10.1021/bm400752k] [Citation(s) in RCA: 154] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Kevin H. M. Kan
- Department
of Chemical Engineering, McMaster University, Hamilton L8S 4L7, Canada
| | - Jian Li
- Department
of Chemical Engineering, McMaster University, Hamilton L8S 4L7, Canada
| | - Kushlani Wijesekera
- Department
of Chemical Engineering, McMaster University, Hamilton L8S 4L7, Canada
| | - Emily D. Cranston
- Department
of Chemical Engineering, McMaster University, Hamilton L8S 4L7, Canada
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34
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Madaeni SS, Heidary F, Salehi E. Co-Adsorption/Filtration of Heavy Metal Ions from Water using Regenerated Cellulose UF Membranes Modified with DETA Ligand. SEP SCI TECHNOL 2013. [DOI: 10.1080/01496395.2012.735741] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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35
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Gericke M, Trygg J, Fardim P. Functional Cellulose Beads: Preparation, Characterization, and Applications. Chem Rev 2013; 113:4812-36. [DOI: 10.1021/cr300242j] [Citation(s) in RCA: 177] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Martin Gericke
- Laboratory of Fibre and Cellulose Technology, Åbo Akademi, Porthansgatan 3, FI-20500 Turku,
Finland, Members of the European Polysaccharide Network of Excellence
(EPNOE)
| | - Jani Trygg
- Laboratory of Fibre and Cellulose Technology, Åbo Akademi, Porthansgatan 3, FI-20500 Turku,
Finland, Members of the European Polysaccharide Network of Excellence
(EPNOE)
| | - Pedro Fardim
- Laboratory of Fibre and Cellulose Technology, Åbo Akademi, Porthansgatan 3, FI-20500 Turku,
Finland, Members of the European Polysaccharide Network of Excellence
(EPNOE)
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36
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Silva Filho EC, Lima LC, Silva FC, Sousa KS, Fonseca MG, Santana SA. Immobilization of ethylene sulfide in aminated cellulose for removal of the divalent cations. Carbohydr Polym 2013; 92:1203-10. [DOI: 10.1016/j.carbpol.2012.10.031] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Accepted: 10/09/2012] [Indexed: 10/27/2022]
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37
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Oylum H, Yilmaz E, Yilmaz O. Preparation of Chitin-g-poly(4-vinylpyridine) Beads. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2013. [DOI: 10.1080/10601325.2013.742815] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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38
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Tang Y, Ma Q, Luo Y, Zhai L, Che Y, Meng F. Improved synthesis of a branched poly(ethylene imine)-modified cellulose-based adsorbent for removal and recovery of Cu(II) from aqueous solution. J Appl Polym Sci 2012. [DOI: 10.1002/app.38878] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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39
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Başarır SŞ, Bayramgil NP. The uranium recovery from aqueous solutions using amidoxime modified cellulose derivatives. I. Preparation, characterization and amidoxime conversion of radiation grafted ethyl cellulose-acrylonitrile copolymers. RADIOCHIM ACTA 2012. [DOI: 10.1524/ract.2012.1983] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
Graft copolymers were prepared by 60Co-γ irradiation of binary mixture of ethyl cellulose (EC) and acrylonitrile (AN). Conversion %-dose graphs were obtained, and 95% copolymer yield has been reached at around 8 kGy dose. Conversion of nitrile groups to amidoxime (AO) were achieved by aqueous solutions of NH2OH · HCl–NaOH at 50 ºC. The amidoxime conversion was followed by using FT-IR spectrophotometer and determined as percentage. After 72 h period, nearly 100% amidoxime conversion was provided. The structures of EC-g-AN and EC-g-AO were characterized by FTIR/ATR, TGA, and SEM methods.
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40
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Singha AS, Rana RK. Functional Polymers from Lignocellulosic Materials: Synthesis, Characterization, and Evaluation of Properties. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2012. [DOI: 10.1080/1023666x.2012.696884] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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41
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Bertoldo M, Cognigni F, Bronco S. Preparation of gelatin/polyoxypropylene grafted copolymers by isocyanate promoted “grafting onto” reaction. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.08.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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42
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Sayyah SM, Khaliel AB, Mohamed EH. Enhancing water resistance of paper by graft copolymerization reaction. J Appl Polym Sci 2012. [DOI: 10.1002/app.37995] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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43
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Teli M, Sheikh J. Extraction of chitosan from shrimp shells waste and application in antibacterial finishing of bamboo rayon. Int J Biol Macromol 2012; 50:1195-200. [DOI: 10.1016/j.ijbiomac.2012.04.003] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Revised: 03/31/2012] [Accepted: 04/04/2012] [Indexed: 12/15/2022]
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44
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Teli M, Sheikh J. Antibacterial and acid and cationic dyeable bamboo cellulose (rayon) fabric on grafting. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2012.02.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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45
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Teli MD, Sheikh J. Graft copolymerization of acrylamide onto bamboo rayon and fibre dyeing with acid dyes. IRANIAN POLYMER JOURNAL 2011. [DOI: 10.1007/s13726-011-0004-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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46
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47
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Raus V, Štěpánek M, Uchman M, Šlouf M, Látalová P, Čadová E, Netopilík M, Kříž J, Dybal J, Vlček P. Cellulose-based graft copolymers with controlled architecture prepared in a homogeneous phase. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24876] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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48
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Leza ML, Casinos I, Guzmán GM. Graft copolymerization of vinylpyridines onto cellulosic fibres by the ceric ion method. The monomer concentration effect. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19880200108] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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49
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Constantin M, Mihalcea I, Oanea I, Harabagiu V, Fundueanu G. Studies on graft copolymerization of 3-acrylamidopropyl trimethylammonium chloride on pullulan. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2010.12.043] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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50
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El-Khouly A, Kenawy E, Safaan A, Takahashi Y, Hafiz Y, Sonomoto K, Zendo T. Synthesis, characterization and antimicrobial activity of modified cellulose-graft-polyacrylonitrile with some aromatic aldehyde derivatives. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2010.07.047] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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